Raymond Redner cleans a kiosk at Death Valley, which has lost 42 positions over the last several years, with 106 remaining. Because of slashed budgets, some parks must rely on volunteers to clean up campgrounds.

Raymond Redner cleans a kiosk at Death Valley, which has lost 42 positions over the last several years, with 106 remaining. Because of slashed budgets, some parks must rely on volunteers to clean up campgrounds. (Wally Skalij / LAT)